Hydrolysable bio-based polyhydroxyurethane networks with shape memory behavior at body temperature

Fiona Magliozzi (1, 2) , Arthur Scali (1, 2) , Guillaume Chollet (3) , Damien Montarnal (4) , Etienne Grau (2, 1) , Henri Cramail (1, 2)

1 LCPO - Laboratoire de Chimie des Polymères Organiques
2 Team 2 LCPO : Biopolymers & Bio-sourced Polymers
3 ITERG - Institut des Corps Gras
4 C2P2 - Laboratoire de Chimie, Catalyse, Polymères et Procédés, R 5265

Among possible routes towards isocyanate-free PUs, aminolysis of cyclic carbonates leading to polyhydroxyurethanes (PHUs) is one of the most promising pathways. Herein, we describe the solvent-free synthesis of shape memory PHU networks from diglycerol dicarbonate through reactive extrusion with varying amounts of primary and secondary triamines, Tris(2-aminoethyl)amine and Tris(2-(methyla-mino)ethyl)amine). Depending on the composition of the system, the glass transition temperature of the PHU networks can be finely tuned in the 20-40°C range and, consequently, affords shape memory recovery at body temperature. In addition, these networks revealed hydro-lysable over a few months and may find uses as bioresorbable templates for medical applications.

Mots clés: isocyanate-free; polyurethanes; aminolysis; polyhydroxyurethane; tris(2-aminoethyl)amine; tris(2-(methylamino)ethyl)amine); shape memory recovery

Domaines: Matériaux; Polymères; Chimie; Science des matériaux [cond-mat.mtrl-sci]

Fiona Magliozzi, Arthur Scali, Guillaume Chollet, Damien Montarnal, Etienne Grau, et al.. Hydrolysable bio-based polyhydroxyurethane networks with shape memory behavior at body temperature. ACS Sustainable Chemistry & Engineering, 2020, ⟨10.1021/acssuschemeng.0c02610⟩. ⟨hal-02869647⟩